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https://www.readbyqxmd.com/read/29126989/anti-thrombotic-and-pro-angiogenic-effects-of-rubia-cordifolia-extract-in-zebrafish
#1
Yi Chen, Pei-Dong Chen, Bei-Hua Bao, Ming-Qiu Shan, Kai-Cheng Zhang, Fang-Fang Cheng, Yu-Dan Cao, Li Zhang, An-Wei Ding
ETHNOPHARMACOLOGICAL RELEVANCE: Rubia cordifolia is a common traditional Chinese medicine that promotes blood circulation and eliminates blood stasis, and has been used to cure diseases related to blood stasis syndrome (BSS) clinically for many years. It has been previously demonstrated that anti-thrombosis and pro-angiogenesis can improve BSS. However, the anti-thrombotic and pro-angiogenic activities of Rubia cordifolia have not been well investigated. AIM OF STUDY: To determine the potential anti-thrombotic and pro-angiogenic activities of Rubia cordifolia and to elucidate the underlying mechanisms...
November 7, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29107421/discovery-of-novel-pyrrolo-pyridine-pyrimidine-derivatives-bearing-pyridazinone-moiety-as-c-met-kinase-inhibitors
#2
Lin Xiao Wang, Xiaobo Liu, Shan Xu, Qidong Tang, Yongli Duan, Zhen Xiao, Jia Zhi, Liwen Jiang, Pengwu Zheng, Wufu Zhu
In continue to our previous research, eight series of pyrrolo[2,3-b]pyridine and pyrrolo[2,3-d]pyrimidine derivatives bearing pyridazinone moiety were designed, synthesized, and the in vitro antitumor activity was evaluated against four cancer cell lines (A549, HepG2, MCF-7 and PC-3). Some selected compounds (22f, 22g, 26c and 26e) were evaluated for the activity against c-Met kinase, and according to the results of kinase inhibitory activity, the compound 22g was further evaluated for other four tyrosine kinases (Flt-3, VEGFR-2, c-Kit and EGFR) to test the enzyme-based selectivity...
December 1, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29100318/flt-1-positive-cells-are-cancer-stem-like-cells-in-colorectal-carcinoma
#3
Ye Huang, Yinpeng Huang, Di Liu, Tianyi Wang, Guang Bai
Recent evidence demonstrates an essential role of cancer stem cells (CSCs) in cancer initiation, progression, migration, metastasis as well as chemo-resistance. Nevertheless, identification of CSCs in different cancers has not been succeeded, since such CSCs are typically lack of a specific and unique marker. Therefore, the current strategy is basically using one or several markers to enrich CSCs, or to isolate CSC-like cells. Here, we showed that in clinically obtained colorectal carcinoma (CRC) specimens, Flt-1, the type 1 receptor for vascular endothelial growth factor A, was significantly upregulated...
September 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29097919/preliminary-19-f-mrs-study-of-tumor-cell-proliferation-with-3-deoxy-3-fluorothymidine-and-its-metabolite-flt-mp
#4
In Ok Ko, Ki-Hye Jung, Mi Hyun Kim, Kyeung Jun Kang, Kyo Chul Lee, Kyeong Min Kim, Insup Noh, Yong Jin Lee, Sang Moo Lim, Jung Young Kim, Ji-Ae Park
The thymidine analogue 3'-deoxy-3'-[(18)F]fluorothymidine, or [(18)F]fluorothymidine ([(18)F]FLT), is used to measure tumor cell proliferation with positron emission tomography (PET) imaging technology in nuclear medicine. FLT is phosphorylated by thymidine kinase 1 (TK1) and then trapped inside cells; it is not incorporated into DNA. Imaging with (18)F-radiolabeled FLT is a noninvasive technique to visualize cellular proliferation in tumors. However, it is difficult to distinguish between [(18)F]FLT and its metabolites by PET imaging, and quantification has not been attempted using current imaging methods...
2017: Contrast Media & Molecular Imaging
https://www.readbyqxmd.com/read/29073567/impact-of-the-fenton-like-treatment-on-the-microbial-community-of-a-diesel-contaminated-soil
#5
Flavia Polli, Daniela Zingaretti, Silvia Crognale, Lorena Pesciaroli, Alessandro D'Annibale, Maurizio Petruccioli, Renato Baciocchi
Fenton-like treatment (FLT) is an ISCO technique relying on the iron-induced H2O2 activation in the presence of additives aimed at increasing the oxidant lifetime and maximizing iron solubility under natural soil pH conditions. The efficacy of FLT in the clean-up of hydrocarbon-contaminated soils is well established at the field-scale. However, a better assessment of the impact of the FLT on density, diversity and activity of the indigenous soil microbiota, might provide further insights into an optimal combination between FLT and in-situ bioremediation (ISB)...
October 14, 2017: Chemosphere
https://www.readbyqxmd.com/read/29072547/serum-concentrations-of-ang-2-and-flt-1-may-be-predictive-of-pregnancy-outcome-in-women-with-pregnancies-of-uncertain-viability-a-phase-i-exploratory-prognostic-factor-study
#6
Alison Richardson, Shilpa Deb, Bruce Campbell, Nick Raine-Fenning
The aim of this study was to determine whether serum concentrations of Ang-1, Ang-2, Flt-1, IL-15 and/or TRAIL can be used to predict outcome in women with pregnancies of uncertain viability (PUVs). Women presenting to the Early Pregnancy Unit at the Queen's Medical Centre in Nottingham between 17.06.14 and 01.09.15 were prospectively recruited. Serum concentrations of Ang-1, Ang-2, Flt-1, IL-15 and TRAIL were measured in women with PUVs. Women were followed-up according to departmental protocols until viability was determined...
October 26, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/29054861/regulation-of-human-feto-placental-endothelial-barrier-integrity-by-vascular-endothelial-growth-factors-competitive-interplay-between-vegf-a165a-vegf-a165b-pigf-and-ve-cadherin
#7
Vincent Pang, David O Bates, Lopa Leach
The human placenta nourishes and protects the developing fetus whilst influencing maternal physiology for fetal advantage. It expresses several members of the VEGF family including the pro-angiogenic/pro-permeability VEGF-A165a isoform, the anti-angiogenic VEGF-A165b, placental growth factor (PIGF) and their receptors, VEGFR1 and VEGFR2. Alterations in the ratio of these factors during gestation and in complicated pregnancies have been reported; however the impact of this on feto-placental endothelial barrier integrity is unknown...
October 20, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/29051303/transport-associated-pathway-responses-in-ovine-fetal-membranes-to-changes-in-amniotic-fluid-dynamics
#8
Cecilia Y Cheung, Debra F Anderson, Robert A Brace
Current evidence suggests that amniotic fluid volume (AFV) is actively regulated by vesicular transport of amniotic fluid outward across the amnion and into the underlying fetal vasculature in the placenta. Our objective was to determine whether gene expression profiles of potential stimulators, inhibitors, and mediators of vesicular transport are altered in response to changes in intramembranous absorption (IMA) rate. Samples of ovine amnion and chorion were obtained from fetal sheep with normal, experimentally reduced or increased AFVs and IMA rates...
November 2017: Physiological Reports
https://www.readbyqxmd.com/read/29042609/structural-analysis-of-pim1-kinase-complexes-with-atp-competitive-inhibitors
#9
Jozefina Bogusz, Karol Zrubek, Krzysztof P Rembacz, Przemyslaw Grudnik, Przemyslaw Golik, Malgorzata Romanowska, Benedykt Wladyka, Grzegorz Dubin
PIM1 is an oncogenic kinase overexpressed in a number of cancers where it correlates with poor prognosis. Several studies demonstrated that inhibition of PIM1 activity is an attractive strategy in fighting overexpressing cancers, while distinct structural features of ATP binding pocket make PIM1 an inviting target for the design of selective inhibitors. To facilitate development of specific PIM1 inhibitors, in this study we report three crystal structures of ATP-competitive inhibitors at the ATP binding pocket of PIM1...
October 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29042120/pilot-study-on-the-impact-of-f18-labeled-thymidine-pet-ct-on-gross-tumor-volume-identification-and-definition-for-pancreatic-cancer
#10
Jennifer L Pretz, Michael A Blake, Joseph H Killoran, Harvey J Mamon, Jennifer Y Wo, Andrew X Zhu, Theodore S Hong
PURPOSE: Accurate target definition for radiation therapy planning in localized pancreatic cancer is critical, particularly when using strategies that omit elective coverage. Standard imaging modalities such as computed tomography (CT), magnetic resonance imaging, and endoscopic ultrasound have limited concordance with pathologic evaluation. Biologic imaging with [F18]-fluorodeoxyglucose (FDG)-positron emission tomography (PET) can also be difficult to interpret because increased activity is indicative of increased glucose metabolism, rather than cellular proliferation...
September 18, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28964937/hypoxia-induces-the-dysfunction-of-human-endothelial-colony-forming-cells-via-hif-1%C3%AE-signaling
#11
Mengyu He, Shuying Ma, Qing Cai, Yan Wu, Chengjie Shao, Hui Kong, Hong Wang, Xiaoning Zeng, Weiping Xie
Endothelial injury is considered as a trigger of pulmonary vascular lesions in the pathogenesis of hypoxic pulmonary hypertension (HPH). Although endothelial colony-forming cells (ECFCs) have vascular regeneration potential to maintain endothelial integrity, hypoxia-induced precise alteration in ECFCs function remains controversial. This study investigated the impact of hypoxia on human ECFCs function in vitro and the underlying mechanism. We found that hypoxia inhibited ECFCs proliferation, migration and angiogenesis...
September 28, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28958753/exercise-pattern-and-distance-differentially-affect-hippocampal-and-cerebellar-expression-of-flk-1-and-flt-1-receptors-in-astrocytes-and-blood-vessels
#12
Morgan E Stevenson, Vienna K Behnke, Rodney A Swain
Aerobic exercise benefits the body and brain. In the brain, benefits include neuroprotection and improved cognition. These exercise-induced changes are attributed in part to angiogenesis: the growth of new capillaries from preexisting vessels. One critical factor involved in the regulation of angiogenesis is VEGF and its receptors Flk-1 and Flt-1. Although exercise is generally found to be beneficial, there are wide variations in exercise regimens across experiments. This study standardized some of these variations...
September 25, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28947613/activating-transcription-factor-3-is-reduced-in-preeclamptic-placentas-and-negatively-regulates-sflt-1-soluble-fms-like-tyrosine-kinase-1-soluble-endoglin-and-proinflammatory-cytokines-in-placenta
#13
Tu'uhevaha J Kaitu'u-Lino, Fiona C Brownfoot, Roxanne Hastie, Ashwini Chand, Ping Cannon, Minh Deo, Laura Tuohey, Clare Whitehead, Natalie J Hannan, Stephen Tong
Preeclampsia is a major pregnancy complication associated with poor placental perfusion and placental hypoxia. Systemic and placental inflammation and elevated placental secretion of the antiangiogenic factors sFlt-1 (soluble fms-like tyrosine kinase 1) and sEng (soluble endoglin) are hallmarks of preeclampsia, causing endothelial dysfunction and multiorgan injury. A molecule that links placental hypoxia, inflammation, and antiangiogenic factor release has not been described. ATF3 (activating transcription factor 3) is highly expressed in placenta...
November 2017: Hypertension
https://www.readbyqxmd.com/read/28934227/hemorrhage-enhances-cytokine-complement-component-3-and-caspase-3-and-regulates-micrornas-associated-with-intestinal-damage-after-whole-body-gamma-irradiation-in-combined-injury
#14
Juliann G Kiang, Joan T Smith, Marsha N Anderson, Thomas B Elliott, Paridhi Gupta, Nagaraja S Balakathiresan, Radha K Maheshwari, Barbara Knollmann-Ritschel
Hemorrhage following whole-body γ-irradiation in a combined injury (CI) model increases mortality compared to whole-body γ-irradiation alone (RI). The decreased survival in CI is accompanied by increased bone marrow injury, decreased hematocrit, and alterations of miRNA in the kidney. In this study, our aim was to examine cytokine homeostasis, susceptibility to systemic bacterial infection, and intestinal injury. More specifically, we evaluated the interleukin-6 (IL-6)-induced stress proteins including C-reactive protein (CRP), complement 3 (C3), Flt-3 ligand, and corticosterone...
2017: PloS One
https://www.readbyqxmd.com/read/28927801/design-synthesis-and-antitumor-activity-of-novel-sorafenib-derivatives-bearing-pyrazole-scaffold
#15
Min Wang, Shan Xu, Huajun Lei, Caolin Wang, Zhen Xiao, Shuang Jia, Jia Zhi, Pengwu Zheng, Wufu Zhu
Four series of Sorafenib derivatives bearing pyrazole scaffold (8a-m, 9a-c, 10a-e and 11a) were synthesized and characterized by NMR and MS. All of the target compounds were evaluated for the cytotoxicity against A549, HepG2, MCF-7, and PC-3 cancer cell lines and some selected compounds were further evaluated for the activity against VEGFR-2/KDR, BRAF, CRAF, c-Met, EGFR and Flt-3 kinases. Compounds 8b and 8i were more active than that of compounds 8h, 9a, especially the IC50 value of compounds 8b on VEGFR-2 kinase was 0...
September 6, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28915798/vemurafenib-plus-cobimetinib-in-unresectable-stage-iiic-or-stage-iv-melanoma-response-monitoring-and-resistance-prediction-with-positron-emission-tomography-and-tumor-characteristics-reposit-study-protocol-of-a-phase-ii-open-label-multicenter-study
#16
Bernies van der Hiel, John B A G Haanen, Marcel P M Stokkel, Daniel S Peeper, Connie R Jimenez, Jos H Beijnen, Bart A van de Wiel, Ronald Boellaard, Alfons J M van den Eertwegh
BACKGROUND: In patients with BRAFV600 mutated unresectable stage IIIc or metastatic melanoma, molecular targeted therapy with combined BRAF/MEK-inhibitor vemurafenib plus cobimetinib has shown a significantly improved progression-free survival and overall survival compared to treatment with vemurafenib alone. Nevertheless, the majority of BRAFV600 mutation-positive melanoma patients will eventually develop resistance to treatment. Molecular imaging with (18)F-Fluorodeoxyglucose ((18)F-FDG) PET has been used to monitor response to vemurafenib in some BRAFV600 mutated metastatic melanoma patients, showing a rapid decline of (18)F-FDG uptake within 2 weeks following treatment...
September 15, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28864183/novel-volumetric-method-for-highly-repeatable-injection-in-microchip-electrophoresis
#17
Noel S Ha, Jimmy Ly, Jason Jones, Shilin Cheung, R Michael van Dam
A novel injector for microchip electrophoresis (MCE) has been designed and evaluated that achieves very high repeatability of injection volume suitable for quantitative analysis. It eliminates the injection biases in electrokinetic injection and the dependence on pressure and sample properties in hydrodynamic injection. The microfluidic injector, made of poly(dimethylsiloxane) (PDMS), operates similarly to an HPLC injection valve. It contains a channel segment (chamber) with a well-defined volume that serves as an "injection loop"...
September 8, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28853043/comparative-evaluation-of-18-f-flt-and-18-f-fdg-for-detecting-cardiac-and-extra-cardiac-thoracic-involvement-in-patients-with-newly-diagnosed-sarcoidosis
#18
Takashi Norikane, Yuka Yamamoto, Yukito Maeda, Takahisa Noma, Hiroaki Dobashi, Yoshihiro Nishiyama
BACKGROUND: (18)F-FDG PET has been used in sarcoidosis for diagnosis and determination of the extent of the disease. However, assessing inflammatory lesions in cardiac sarcoidosis using (18)F-FDG can be challenging because it accumulates physiologically in normal myocardium. Another radiotracer, 3'-deoxy-3'-(18)F-fluorothymidine ((18)F-FLT), has been investigated as a promising PET tracer for evaluating tumor proliferative activity. In contrast to (18)F-FDG, (18)F-FLT uptake in the normal myocardium is low...
August 29, 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28828716/concentration-sources-and-risk-assessment-of-pahs-in-bottom-sediments
#19
Agnieszka Baran, Marek Tarnawski, Krzysztof Urbański, Agnieszka Klimkowicz-Pawlas, Iwona Spałek
The aims of the study were to investigate the concentration, sources and ecological risk of PAHs (polycyclic aromatic hydrocarbons) in bottom sediments collected from nine reservoirs located in south-eastern Poland. The concentration of ∑PAHs in sediments ranged from 150 to 33,900 μg kg(-1). The total PAH concentration in the bottom sediments was arranged in the following order: Rybnik > Rzeszów > Brzóza Królewska > Brzóza Stadnicka > Besko > Chechło > Ożanna > Głuchów > Narożniki...
August 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28817576/gestational-diabetes-mellitus-is-associated-with-increased-pro-migratory-activation-of-vascular-endothelial-growth-factor-receptor-2-and-reduced-expression-of-vascular-endothelial-growth-factor-receptor-1
#20
Felipe Troncoso, Jesenia Acurio, Kurt Herlitz, Claudio Aguayo, Patricio Bertoglia, Enrique Guzman-Gutierrez, Marco Loyola, Marcelo Gonzalez, Meriem Rezgaoui, Gernot Desoye, Carlos Escudero
Placentas from gestational diabetes mellitus (GDM) are often hypervascularized; however, participation of vascular endothelial growth factor (VEGF) and its receptors in this placental adaptation is unclear. We aimed to test whether changes in phosphorylation of tyrosine 951 or tyrosine 1175 (pY951 or pY1175) of the vascular endothelial growth factor receptor 2 (KDR) are associated with the proangiogenic state observed in placentas from GDM. We obtained placental samples from women with normal pregnancies (n = 24) or GDM (n = 18)...
2017: PloS One
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